the bridge was built, the wood
contained 15 grams of carbon-14. How much carbon-
14 would it have contained when it was found by the
archaeologists? Round to the nearest hundredth
When was the bridge built? You have omitted important information. In fact, it looks like you have omitted at least one sentence and part of another.
Carbon-14 has a half-life of about 5,600 years.
To determine how much carbon-14 the wood of the bridge would have contained when it was found by the archaeologists, we need to consider the decay of carbon-14 over time. Carbon-14 is a radioactive isotope with a half-life of approximately 5730 years.
To calculate the amount of carbon-14 remaining, we can use the formula:
A = A₀ * (1/2)^(t / t₁/₂)
Where:
A₀ is the initial amount of carbon-14
A is the amount of carbon-14 after time t
t is the elapsed time in years
t₁/₂ is the half-life of carbon-14 (5730 years)
In this case, the elapsed time is the number of years between when the wood was built and when it was found by the archaeologists. Unfortunately, you haven't provided that information. If you can provide the elapsed time, we can proceed with the calculation.